A complete list of available autotetraploids and their diploid progenitors (if available) has been published in previous issues of Barley Genetics Newsletter (cf. BGN 22:103-109; BGN 23:164-172). Information on spike type, earliness, thousand-grain-weight and vigour has been presented there. New autotetraploids, mainly derived from anther culture experiments, are added to tthe collection from time to time. The stocks are maintained at our experimental station and limited seed samples are available any time. Breeders of noval stocks are invited to send a seed sample to me for incorporation into the collection.